feat(sanity): add "Compare versions" document action to releases plugin

packages/sanity/src/core/releases/plugin/documentActions/CompareVersionsAction.tsx

@@ -0,0 +1,37 @@
+import {TransferIcon} from '@sanity/icons'
+import {useMemo} from 'react'
+
+import {type ActionComponent, type DocumentActionProps} from '../../../config'
+import {useDiffViewRouter} from '../../../diffView/hooks/useDiffViewRouter'
+import {useTranslation} from '../../../i18n'
+import {usePerspective} from '../../hooks/usePerspective'
+import {releasesLocaleNamespace} from '../../i18n'
+
+export const CompareVersionsAction: ActionComponent<DocumentActionProps> = ({type, version}) => {
+  const {t} = useTranslation(releasesLocaleNamespace)
+  const {navigateDiffView} = useDiffViewRouter()
+  const {perspectiveStack} = usePerspective()
+  const isEnabled = version !== null && perspectiveStack.length > 1
+
+  return useMemo(
+    () => ({
+      icon: TransferIcon,
+      label: t('action.compare-versions'),
+      group: ['paneActions'],
+      disabled: !isEnabled,
+      onHandle: () => {
+        if (!isEnabled) {
+          return
+        }
+        navigateDiffView({
+          mode: 'version',
+          nextDocument: {
+            type,
+            id: version._id,
+          },
+        })
+      },
+    }),
+    [isEnabled, navigateDiffView, t, type, version?._id],
+  )
+}

packages/sanity/src/core/releases/plugin/documentActions/index.ts

@@ -1,5 +1,6 @@
 import {type DocumentActionComponent} from '../../../config/document/actions'
 import {type DocumentActionsContext} from '../../../config/types'
+import {CompareVersionsAction} from './CompareVersionsAction'
 import {DiscardVersionAction} from './DiscardVersionAction'
 import {UnpublishVersionAction} from './UnpublishVersionAction'
 
@@ -10,8 +11,10 @@ export default function resolveDocumentActions(
   context: DocumentActionsContext,
 ): Action[] {
   const duplicateAction = existingActions.filter(({name}) => name === 'DuplicateAction')
-
-  return context.versionType === 'version'
-    ? duplicateAction.concat(DiscardVersionAction).concat(UnpublishVersionAction)
-    : existingActions
+  return [
+    ...(context.versionType === 'version'
+      ? duplicateAction.concat(DiscardVersionAction).concat(UnpublishVersionAction)
+      : existingActions),
+    CompareVersionsAction,
+  ]
 }